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Saturday, December 8, 2012

Lacrimal system

Lacrimal system:LocatedLocated above each eye lacrimal gland. Lacrimal glands shape, such as the amygdala, which is excreted water layer covering the eye.Lacrimal gland is divided into part eyebrows and a loud voice part, divided by the upper tarsal muscle lever Levator palpebrae superioris muscle and parts are connected with each other.
Part Amahgra: This is the biggest part and is located in the lacrimal fossa bone in the quarry. It contains a minute channels combine to be 3-5 main channels, and these channels unite eyebrow and part of the there enters tears to the eye.Part eyebrow: its bottom part is close to the eye. If at our heart Supreme brow shows this part.
Tears gathered in the angle between the upper eyebrow and the eye, and then passes on the surface of the eye and from the point lacrimal lacrimal puncta.
Sensory nerves come from the fifth cranial nerve (which gives branches Dmaaa of the lacrimal gland)Albarasimbthawayh nerves come from lacrimal nucleus in the pons and going in the seventh the Qahvs nerve that reflect the geniculate ganglion node after this node branch out of the seventh cranial nerve named: greater petrosal nerve which fiber Albarasimbthawayh which go to the lacrimal gland Fathvzha secretion.Asambthawayh nerves come from superior cervical ganglion to the lacrimal gland.

Arterial processing: comes lacrimal gland lacrimal artery, which is a branch of the ophthalmic artery. Venous blood return through the superior ophthalmic vein.

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